4.2.1 Check Regulator(PMIC) Circuit
TEST POINT
Circuit Diagram
Checking Flow
+2.6V_TX
+2.8V_MSMP
+2.85V_TX_REG
+4.2 Vbatt
OK?
U201 Pin E14
TX ON High?
Replace U201
Replace U400
Regulator Circuit is OK
See Next Page to Check
VCTCXO
Check Pin 4, 13, 16, 29
U400
U201
YES
YES
NO
NO
U400
Pin 29
(+2.6V_Tx)
U400
Pin 16
(+2.8V_MSMP)
U400
Pin 4
(+4.2V_Vbatt)
U400
Pin 13
(+2.85V_TX_REG)
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Summary of Contents for ID2750
Page 33: ...DCN Mode Graph 4 2 1763 04MHz DCN384 Z 3 X B O X C O M ...
Page 37: ...Waveform DP101 Pin 7 Graph 4 3 c DP101 Pin2 Graph 4 4 c Z 3 X B O X C O M ...
Page 48: ...Circuit Diagram Z 3 X B O X C O M ...
Page 49: ...Figure 4 3 1 PMIC PM6610 FUNCTIONAL BLOCK DIAGRAM 4 3 Logic Part Trouble Z 3 X B O X C O M ...